Detachable-plow-edge-bending machine



P. A. NORDQUiST.

DETACHABLE PLOW EDGE BENDING MACHINE.

APPLICATION min APR. 14. 1920.

1,374,094; 1 Patented Apr. 5, 1921.

a SHEETS-SHEET I.

attuned DETACHABLE PLOW EDGE'BENDING MASHINE.

APPLICATION FILED APR. 14. 1920. r

1,374,094,. Patented Apr. 5, 1921.

3 SHEETSSHEET 2.

Qua anus P. A. NORDQUIST. DETACHABLE PLOW EDGE BENDING MACHINE- APPLICATION FILED APR-14, 1920.

3 SHEETS-SHEET 3.

DIGIDIQIABW Patented Apr. 5, 1921.

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PETER aneurs'r nonnaurs'r, or-oennn, UTAH, AssreNoR-To nnrnonanrn rrow'j SHARE EDGE MANUFACTURING OMPANY, or oennmnrarr, aconronarron.

nE'rAoHABLE-ILow-nnGE- ENnINe MACHTYINE.

machine particularly adapted for longitu- .7

dinally bending strips of meta1,-which strips are adapted to beused'as detachable plowed es. v

A further object is to provide a machine for bending strips of =Inetal' longitudinally comprising an endless male die carrying chain which is intermittently moved, thereby moving one of the chain carried male dies to a position where it will register with a femaledie carried by a pivoted jaw. ;Also, to provide gripper means for gripping the metal strip and holding the same so that it will be forced into the female die carried by the pivoted j aw'so that "the same will be longitudinally bent. I a V v A further object is to provide. means whereby the'male die carrying chain, the pivoted jaw, the intermittent'movement of male die carrying chain and the opening of the gripper jaws and the pivoted jaws will be operated fromamaindrive shaft. 1 i A further; object is to provide an adjustable eccentric bar, which bar actuates a dog? which cooperates with a ratchet wheel for intermittently 'moving the die carrying chain. a i

. A further object is to providecam means for actuating gripping jawsof the pivoted jaw member, whereby said gripping jaws will be closed when gthe pivoted j aw' moves inwardly for a bendingoperation. Alsoto.

provide means whereby the bent metallic strips'will be removedfrom themale bending dies as the chains move incident tothe intermittentmovement thereof. v 7 p With the above and other objects in view the invention resides in the combination and arrangement of parts as. hereinafter set forth, shown in the drawings. described and claimed it being understood that changes in the precise embodiment of'the invention Specification of Letters Patent. 7

:Patent dA r. 5, i921.

Application filed April 14; 1920. 3 Serial No. 373,-776.-

claimed without departing from the spirit of the. inventiom-v 1 I In the drawings-:. I

igural is a side zelevationf the 'd: g machine. V 7 v Fig. 2 is :a front elevation ofjthe bending machine. r

Fig. 3 is a longitudinal verticalsectional vlew taken on line3'3 of Fig. 2. j

l'designates a frameand 2 the sides thereof. The rear end of 'the'fram'e is preferably] lower than the front end and has rotatably mounted inbearin'gs 3 thereof a shaft 4,'on

one end of'which' shafta drive wheel -5 is secured. Power may beibelted to the-drive wheel 5 or if so desired power may be attached direct to the shaft4. The 'shaft 4: 7 is also provided with gear 6'which meshes mayibemade within thescopexof what .is i i Referring to the drawings, the numeral with a. large gear Tcarried by shaft 8-,"which j shaft is rotatably moun'ted in bearings of the side 2 of the frame. Secured to'one end of the shaft 8 is a gear 9, which gearlmeshes" with the large gear 10 which is rotatably mounted on stub shaft 11 ofthe frame. It]

will be seen that as the pulley 5 moves in the direction of the arrow at that the gear 7- will rotate in the direction of'the arrow 6,"

which will, through the medium of the small gear 9 causethe large gear 10 to rotate in the; direction of the arrow 0. By providing the: train of gears it will'be seen that the power will be materially increased and at the same" time the 'speedof rotation of thelarge-gear 10 will be decreased so as not to operate the mechanism at too high a'speed. V Rotatably mountedin bearings 12 and 13 adjacent-the forward end of'the frame l- 'are shafts 14 and 15. j Secured toathe shafts 14- and 15-are spaced sprockets 16 and around which sprockets endless chains 17 pass. The; sprocket chains are transversely connected 'by die holders 18,-in which die holders male dies 19 are carried. The male diesj19' are triangular in shape and are adapted td bend strips of metal longitudinally" so that they will. be substantially V-shajped in cross'section. Secured to one endof the shaft'lfi'is a ratchet wheel, which ratchet wheelfiis adapted to be intermittently'rotated'so' as to; intermittentlymove the male dies 19. The intermittent movement of the ratchet wheel 20 is accomplished by means of therockable member 21 which is rockably mounted on the shaft 14and has pivoted to one of its arms, as at 22, the pawl 23, the end of which pawl is adapted to engage one of the teeth of the ratchet wheel when the rockable member is moved so that the pawl moves forwardly and on a reverse movement of the arm 24 'of' the rockable member, the ratchet Wheel is moved in the direction of the arrow d. Pivoted to the arm 24 as at 25 is an operating bar 26 which opera-ting bar is provided with means 27 whereby the same may be adjusted asto length so as to vary the adjustment of the rockable member 21. The bar 26' is bifurcated as at 28 so as to formspaced arms 2-9 adapted to engage on each sideof the hub of the large gear 10 so that the bar 26 will be guided in its longitudinal movement the cam 30 which is carried by the hub of the gear 10 engages the pivoted roller 31,

which ispivotally mounted'on a pin 32 of the bar'26. It will be seen that as the gear 10; rotates that the cam 30 will come'into engagement with the roller 31, thereby causing the bar 26 to move radially from the center of the gear 10 so that the arm 24 will be forced outwardlyand the pivoted dog 23, which engages one of the teeth of the ratchet and cause said ratchet wheel to rotate. in the direction of the arrow 93. After the cam '30 haspassed the pivoted roller 31 it will be seen that the bar 26 will slide to a position as shown in Fig; 1 so that theintermittent rotation of the ratchet wheel will be repeated. The rotation being sufficient tomove the male dies 191a space equal to the distance they are spaced apart on the chains 17.

v Pivotally mounted on a shaft carried in spaced ears 34 at the forward end of the frame'l is a pivoted jaw 35, which jaw comprises the sides36 the lower ends of which are pivotally mounted 'on' the shaft 33 and disposed between the spaced ears 34 of the frame 1. 'Rockably mounted in bearings 3'? of the upper ends of the sides of the jaw 35 are the pintles 38 of a rockable gripper member 39 whichgripper member is adapted to rock slightly so that it will cause the gripping elements to come out of engage,

ment with the upper face 40 ofthe female die 41, which die is secured to lugs 42 carried by the inner faces of the arms 36'and held in place by means of bolts .43. When the .1 jaw 35 is moved outwardly the gripper mem ber 39..is rocked so that the'gripping elements will be openedas shown in dotted lines in Fig. 3, said gripping elements being adapted to be closed so as to engage the metallic strip 44 and hold the same in registration with the female die when the same is moved inwardly against the male die 19 so that-said male die will bend the strip 44 longitudinally. A transversely disposed bar 45 which is carried by the sides 2 of the frame 1 is disposed behind the male die 19 when the same is going through a bending operation so as a form a solid foundation for said male die 19. Secured to a reduced portion 46 of the pintle 38 atone side of the jaw 35 is a lever 47 The arm 48 of which pivotally, connected as at 51 to the large gear 10, at a point nearthe edge of said gear 10, and as the gear 10 rotates the link =1 will force the arm 48 of thelever 47in lever extends upwardly and has connected to its end as at 49 a link 50, which link is the direction of the arrow e which will cause the gripper member 39 to release thebent, strip and at the same time will rock the arm 52 of the lever '47 inthe direction of the arrow 7, until theroller 53 carriedthereby moves upwardly until it clears thearcuatei surface. 54. Howeverduring this movement the cam 30 of the large gear 10 will have moved until it engages the roller 31, thereby. V

causing the sprockets 16 to rotate in the direction of the arrow 9, which rotation will move the male'die'which has just been in operation and on which the bent strip is disposed upwardly and the adjacent fmale die 19 below moved into position for benda ing and receiving the next strip. After the roller 53 has cleared the arcuatesurface 54 the furtherfrotation of the large gear .10

will cause the pivoted .jaw 35 tobe moved outwardly to the position shown in dotted lines in Fig; 3, the roller'53 being in en gagement with the, cam surface 55. When the pivoted jaw isin the out position as immediately after it clears the cam: surface 55 and {engages the arcuate surface 54.1

However during this movement the jaw will be moved inwardly until the edge ofthe male die strikes the center of the strip 44 and bends the same longitudinally so that a strip V-shaped in cross: section is formed,

The pintle 38 at the otherv end of the grip: ping member 39 is provided with an arm 56v similar in shape and length to the arm 48 of the lever 47 and pivoted to the end of said lever 56. as at 57 is a link "58. The

other end ofthe link 58 is ivoted to an arm 59 as at 60 of a counterba ance161 which. iscarried by the shaft 11, which also carries the large. gear 10 there being a counterbal ancexweight 62 oppositely. disposed to the arm 59 and forming means Wherebya posi-- tive action will bevinsured and the proper ing parts. 7 e p It. will. be noted that each maledie passes upwardly and has disposed and frictionally held thereon the bent V-shaped strip, theremomentum and power impartedfto themov The strips to be bent are placed in the gripping jaws of the pivoted jaw when the gripping jaw 39 is in open position as shown in dotted lines in Fig. 3. The feeding and placing of the strips 44. in the pivoted jaw is'preferably done by hand and as the strip rests on a transversely disposed ledge of the female die 41 and as the jaw 35 is in an 7 inclined position, the initial movement of the arm 56 will move the gripping jaw 39 downwardly until it engages the upper edge of the strip 44 thereby holding the same against displacement. The further movement rearwardly of the link 58 will cause the pivoted jaw 35 as a whole to move inwardly until the gripped strip 44 is bent longitudinally by the male die 19 which forces the same into the V-shaped longitudinal recess of the female die 41.

From the above it will be seen that a machine is provided for bending longitudinally strips of metal so that they will be formed substantially V-shaped in cross section'and by slightly varying the shape of the male and female dies, it will be seen that strips V-shaped in cross section may be formed with curves or compound curves so that they may be made to conform to various contour shapes for use in connection with plow share edges. The invention having been set forth what is claimed as new and useful is:-

1. A metalbending machine comprising a frame, an endless chain vertically movable in said frame, dies carried by said endless chain, a pivoted jaw pivoted to the frame, said jaw having a die member, means for intermittently moving the chain carried dies and means for moving the pivoted jaw inwardly during a bending operation.

2. A metal bending machine comprising a frame, an endless chain verticallymovable in said frame, a pivoted jaw pivoted to the frame, metal bending *dies carried by the endless chain and by thepivoted jaw, means and means for closing the jaw. during a bending operation and opening the jaw after a bending operation.

3. A metal bending machine comprising a frame, an endless chain vertically movable in said frame, a series of dies equally spaced from each other and carried by said chain, a pivoted jaw pivoted to the frame and providedwith a die, and means operated from a single source of power for moving the endless chain the distance that the dies thereon are spaced apart then moving the pivoted jaw inwardly and then moving the pivoted jaw outwardly at the sirne timethat an ad jacent chain carried die is moved into operative position. 7

4:. A metal bending machine comprising a frame, an endless chain vertically movable in said frame, a series of dies equally spaced from each other and carried by the chain, a pivoted jaw pivoted to the frame, a grip ping device carried by the jaw and adapted to grip and hold apiece of metal, a die car ried by the pivoted jaw and disposed behind the gripping jaw held strip of metal, and means operated from a single source of power for moving the die carrying chain a distance equal to the space between its dies, opening the gripping members, and moving the pivoted jaw outwardly.

5. A metal bending machine comprising a frame, an endless chain vertically movable in said frame, a series of dies equally spaced from each other and carried by the chain, I

a pivoted jaw pivoted to the frame and provided with a die, a holding device carried by the jaw and adapted to hold a piece of metal in registration with the die carried by the jaw, and means operated from a single source of power for intermittently moving the die carrying chain, closing: the pivoted jaw at the same time closing the holding device so as to bend the strip of metal held in the holding device and then open the pivoted jaw.

6. A metal bending machine comprising a frame, an endless chain verticallyfmovable in said frame, a series of dies equally spaced from each other and carried by the chain, a pivoted jaw pivoted to'the frame and provided with a die, aholding device carried by the jaw and adapted to hold a piece of metal in registration with the die carried by the jaw, means whereby power from a single source will close the holding device and the jaw and move the same inwardly against a die carried by the die carrying chain, open the jaw and move the adjacent chain carried die into position to register with the jaw carried die on the next operatiomand means for stripping the bent strips from the chain 7 r carried dies. for intermittently moving the endless chain,

In testimony whereof I have signed my name to th1s specification in the presence of two subscribing witnesses.

.. PETER AUeUrsT NORDQUISTT;

Witnesses:

F. A. BEHLING, W; J. BLACKBURN. 

